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p-Block Elements - I
hard
Given below are two statements:
Statement $I$ : The decrease in first ionization enthalpy from $B$ to $Al$ is much larger than that from $Al$ to $Ga$.
Statement $II$ : The d orbitals in Ga are completely filled.
In the light of the above statements, choose the most appropriate answer from the options given below
A
Statement $I$ is incorrect but statement $II$ is correct.
B
Both the statements $I$ and $II$ are correct
C
Statement $I$ is correct but statement $II$ is incorrect
D
Both the statements $I$ and $II$ are incorrect
(JEE MAIN-2023)
Solution
The first ionization energies (as in NCERT) are as follows:
$B$ : $801\,kJ / mol$
$Al : 577\,kJ / mol$
Ga : $579\,kJ / mol$
$Ga :[ Ar ] 3 d ^{10} 4 s ^2 4 p ^1$
Standard 11
Chemistry
